Emerson Rosemount 3051S Series, Reference Manual, Page: 81 / 240

Reference Manual
00809-0100-4801, Rev FA
October 2010
4-7
Rosemount 3051S Series
NOTE
Select pressure input values so that lower and upper values are equal to or
outside the 4 and 20 mA points. Do not attempt to obtain reverse output by
reversing the high and low points. This can be done by going to “Rerange” on
page 3-9 of Section 3: Configuration. The transmitter allows approximately
five percent deviation.
4. Follow the commands provided by the Field Communicator to complete
the adjustment of the lower value.
5. Repeat the procedure for the upper value, replacing 2: Lower sensor trim
with 3: Upper sensor trim in Step 3.
AMS
Right click on the device and select “Calibrate,” then “Sensor trim” from the
menu
.
1. Select “Lower sensor trim.” The lower sensor trim value should be the
sensor trim point that is closest to zero.
2. Click
Next
after setting the control loop to manual.
3. Click
Next
after applying appropriate pressure to sensor.
4. Select
Next
to acknowledge the loop can be returned to automatic
control.
5. Select
Finish
to acknowledge the method is complete.
6. Right click on the device and select “Calibrate,” select “Sensor trim” from
the menu
.
7. Select “Upper sensor trim” and repeat steps 2-5.
Recall Factory Trim—
Sensor Trim
The Recall Factory Trim—Sensor Trim command allows the restoration of the
as-shipped factory settings of the sensor trim. This command can be useful
for recovering from an inadvertent zero trim of an absolute pressure unit or
inaccurate pressure source.
Field Communicator
Enter the fast key sequence “Recall Factory Trim—Sensor Trim.”
AMS
Right click on the device and select “Calibrate,” then “Recall Factory Trim”
from the menu
.
1. Click
Next
after setting the control loop to manual.
2. Select “Sensor trim” under “Trim to recall” and click
Next
.
3. Click
Next
to acknowledge restoration of trim values is complete.
4. Select
Next
to acknowledge the loop can be returned to automatic
control.
5. Select
Finish
to acknowledge the method is complete.
Analog Output Trim
The Analog Output Trim commands allow you to adjust the transmitter’s
current output at the 4 and 20 mA points to match the plant standards. This
command adjusts the digital to analog signal conversion (see Figure 4-1 on
page 4-3).
Fast Keys
1, 2, 3, 4, 1
Device Dashboard
Fast Keys
3, 4, 3